CVE-2023-50897CWE-434

WordPress Media File Renamer plugin <= 5.7.7 - Arbitrary File Rename lead to RCE vulnerability

Critical · published January 5, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
24.6
In the wild
Unconfirmed
What it is

🚨 An unrestricted file upload flaw in Meow Apps Media File Renamer lets attackers sneak in all sorts of dangerous files. 🔥 Think of it like a restaurant that allows anyone to deliver food without checking the quality — you could end up with a toxic dish that ruins the whole dining experience! An attacker could upload malicious files, potentially leading to remote code execution, data breaches, or complete server takeover. This is not just a minor hiccup; it opens the floodgates for chaos! Imagine the damage they could do if they can run their own code on your server.

Put simply

Think of it like a restaurant that allows anyone to deliver food without checking the quality — you could end up with a toxic dish that ruins the whole dining experience! This vulnerability allows file uploads without proper validation, meaning attackers can upload harmful files that the application trusts, bypassing security checks entirely.

What to do

An attacker could upload malicious files, potentially leading to remote code execution, data breaches, or complete server takeover. This is not just a minor hiccup; it opens the floodgates for chaos! Imagine the damage they could do if they can run their own code on your server. Update to Media File Renamer version 5.7.8 immediately. Additionally, ensure that file type validation is in place to block any dangerous file types from being uploaded in the future. Regular audits of uploaded files can also help mitigate risks. You've got this! Follow these steps and you'll be well on your way to locking down the system! 🛡️

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00328 · 24.6th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-01-05T13:29Z
EPSS history
Timeline
  • 05 JAN 13:29Z
    WordPress Media File Renamer plugin <= 5.7.7 - Arbitrary File Rename lead to RCE vulnerability
    cvelistv5